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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 106 for “"liquid film"”.
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Liquid film coefficients of extraction for solid cylinders
Call number: LD2668 .T4 1950 D36
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Characteristics of the Liquid Film in Horizontal Two -Phase Flow
… is to present a broad survey of detailed liquid film thickness results for a variety of geometries for which film thickness data is not currently available. Measurements for round tubes, square tubes in two orientations, and a triangle tube in two orientations are presented. Beyond the …
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Measurement of Liquid Film in Annular Flow Using X-Ray Densitometry
Two-phase annular flow film thickness is a crucial parameter in nuclear thermal hydraulics, yet conventional measurement techniques such as impedance probes may compromise accuracy by directly contacting and potentially disturbing the flow. Non-intrusive measurement methods are needed to provide …
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The effect of solute on the liquid film resistance in gas absorption
Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1937.
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Numerical Investigation of Liquid Film Dynamics and Atomisation in Jet Engine Fuel Injectors
Today’s aerospace industry continues to exploit liquid hydrocarbon fossil fuels. Motivated by operational considerations, continued availability and cost, this is likely to be the case for many years, despite the obvious environmental concerns. The interplay of liquid atomisation, spray …
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Solidification in a thin liquid film : growing Alq₃ needles via methanol-vapor annealing
… (e.g., the crystallinity) of these thin films. This thesis examines how solvent-vapor annealing of thin, amorphous films of Alq₃-i.e., tris-(8-hydroxyquinoline) aluminum-promotes the growth of single-crystal needles; we explore this system through experiments, modeling, and analytical …
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The experimental study and numerical simulation of falling liquid film flow on horizontal tubes
… been found so far in studies of water falling film up to 100 mm intertube spacing. No simulation analysis of film thickness under influence of intertube spacing in 3 dimensional models. Therefore, to the best of author’s knowledge, this research aims to illuminate the effects of intertube …
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The Effect of Liquid Properties on The Interaction Between a Turbulent Air Stream and a Flowing Liquid Film
Made available in DSpace on 2014-12-05T17:15:32Z (GMT). No. of bitstreams: 1 6003928.pdf: 5845298 bytes, checksum: 3e601d49cafc8dba89671603d8f270b0 (MD5) Previous issue date: 1960
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Advancement of closure relations for annular flow modeling in CFD
… Boiling water Reactors (BWRs), the presence of a liquid film in contact with the heated rod surface is crucial to ensure an efficient heat removal and prevent the threatening occurrence of dryout. The accurate prediction of the complex multidimensional liquid film behavior in advanced BWR fuel …
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Cleaning viscoplastic soil layers from flat surfaces using impinging water jets
Impinging liquid jets are widely used in industry to clean unwanted soil layers from the internal walls of storage tanks and mixing vessels. Viscoplastic layers are common in a wide range of industrial applications and are challenging to clean due to their yield stress behaviour. When a stationary …
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Flow fields and heat transfer of liquid falling film on horizontal cylinders
A liquid film flowing over horizontal cylinders is of great importance as a high rate of heat transfer exists between the falling liquid film and the horizontal cylinders. The objective of this research is to use numerical predictions, following experimental verification, to study the flow field …
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Printed electronics and micro-electromechanical systems
… of a suite of printing processes including liquid embossing and offset liquid embossing (OLE). These printing techniques have created resistors, capacitors, and thin-film transistors without etching, vacuum deposition, or high temperatures. Here, the fabrication of all-printed electrostatic …
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Separação de misturas líquidas em escoamento pelicular por meio de radiação térmica
… of the components vaporizes at the surface of a liquid film that flows over a heated inclined plate. The vapor condenses in contact with a cold plate, parallel to and on top of the first one, fornling also a liquid film. In the maciel are analysed a) the process of heat transfer through the films …
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Partial singular integro-differential equations models for dryout in boilers
… with the dryout, in steam generating pipes of a liquid metal fast breeder reactor is proposed. The model is based on thin-layer lubrication theory and thin aerofoil theory. The exchange of mass between the vapour core and the liquid film due to evaporation of the liquid film is accounted for in …
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A computational and experimental investigation into the performance of industrial refrigeration helical oil separators
… prevents the compressor discharge oil creating a liquid film on the internal walls of the heat exchangers which leads to a reduction in efficiency of the system and increased operating costs. The Henry Technologies helical oil separator operates in refrigeration systems globally yet there is …
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The determination of the operating characteristics of an 18-inch stoneware coke-packed gas absorption tower
… were made to determine and to relate the overall liquid-film coefficient of absorption (K<sub>L</sub>a, lb.mols/(hr)(cu.ft.)(unit cone. diff.)) to the solvent rate (L, lb.mols/(hr)(sq.ft.)) and the partial pressure (p. mm. of Hg) of the inlet carbon dioxide. The following relations were developed: …
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Atomization and Deposition in Two-Phase Annular Flow: Measurement and Modeling (Pressure Drop, Thin Films, Turbulent Dispersion)
… annular two-phase flow and of deposition of this liquid back to the liquid film. These models have been incorporated into a design scheme for the prediction of two-phase pressure drop and fully developed entrained liquid fraction for the annular regime.
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